MAX44268 Maxim, MAX44268 Datasheet - Page 13

• Manufacturer Part Number: MAX44268
• Description: The MAX44268 is an ultra-small and low-power dual comparator ideal for battery-powered applications such as cell phones, notebooks, and portable medical devices that have extremely aggressive board space and power constraints
• Manufacturer: Maxim

Use 1.0FF bypass capacitors from V
mize performance, minimize stray inductance by putting
this capacitor close to the V
lengths. Use 1nF bypass capacitors from REF/INA- to
GND as close as possible to the IC. Do not route noisy
traces near REF/INA-.
The IC can be used to detect peripheral devices
connected to a circuit using comparator B. This includes
a simple jack-detect scheme for cell phone applica-
tions.
conjunction with an external reference to detect an
accessory
the devices allows the output logic level to be con-
trolled independent of the peripheral device’s load,
making interfacing and controlling external devices
as simple as monitoring a few digital inputs on a
microcontroller or codec.
PROCESS: BiCMOS
Figure 8
ID
shows how the device can be used in
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input.
Board Layout and Bypassing
The
CC
Chip Information
open-drain
pin and reducing trace
CC
to GND. To maxi-
Jack Detect
Dual Comparator with Reference
output
1.3mm x 1.3mm, Low-Power
of
Figure 8. Jack Detector Circuit
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
MAX44268EWL+T
ACCESSORY
PART
ID
CONNECTOR
V
CC
-40NC to +85NC
TEMP RANGE
200kI
V
Ordering Information
REF
V
CC
MAX44268
MAX44268
PACKAGE
9 WLP
PIN-
GND
OUT2
MARK
+AJK
TOP
V
PULL